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Kitronik Battery Tester Project Kit

Measure the remaining capacity of AA batteries with this kit. The LED scale generates a reading of the battery in the holder using a Quad Operational Amplifier.

Availability: In Stock.

Code 1+ 5+ 50+ 200+* 300+*
incl VAT

*includes bulk buy discount, discount applied at checkout


This kit uses a single AA battery holder into which the user places a battery. LEDs then illuminate to show the remaining capacity of the battery. The circuit uses a quad operational amplifier to provide a reference voltage and comparators to determine which LEDs should go on. This makes it a great kit for studying operational amplifiers.

Testing of the kit can be performed using an adjustable power supply, or with our circuit tester (consisting of an AA battery holder, variable resistor & crocodile clips).


  • Displays battery charge level with 4 LEDs.
  • Great for showing how operational amplifiers work.



  • PCB Length: 68.5mm.
  • PCB Width: 38mm.



This kit is supplied in a simple grip seal bag.

Free samples:

Teachers can order a sample of this kit (one per school) here. You will need to select the kit from a list of all the sample kits; the stock code for this kit is 2102.
Note: this service is only offered to schools for evaluation purposes only.

Buy British:

 This kit is designed and manufactured in the UK by Kitronik.

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